Here are examples for fresh and frozen blueberries.
FRESH:
16 calories in 1 oz, or 28g, of blueberries
19 calories in 15 blueberries
38 calories in 30 blueberries
39 calories in 50 blueberries
78 calories in 100 blueberries
56 calories in 3.5 oz, or 100g, of blueberries
112 calories in 7 ounces or 200g of blueberries
128 calories in 8 ounces or 227g of blueberries
83 calories in 1 cup of blueberries
229 in 1 pint of blueberries (14.2 oz or 404.g)
FROZEN:
79 calories in 1 cup of frozen unsweetened blueberries.
39-40 calories in a a 1/2 cup of frozen unsweetened blueberries
For the free calorie charts, showing how many calories you should have in total per day for all foods, and the Calorie in Vegetables Chart, and the Calorie in Fruits Chart, see the page links given below. Use the charts as daily guides for weight loss, or weight maintenance once you have reached your target weight.